Slab Depth SPEED PLATE Dimensions Center-to-Center Spacing
5 6 1/4 thick X 4 wide X 6 long 18 7 8 3/8 thick X 4 wide X 6
long 18
9 11 3/4 thick X 4 wide X 6 long 20
Spacing is variable and is determined by the individual
requirements of each project. Consult a Greenstreak Engineer for
recommendations.
U.S. Patent Number 6,145,262 and patent pending
Greenstreaks SPEED PLATE reduces the number of dowels required
when compared with conventional doweling systems. SPEED PLATE
allows the installer to increase the center distance between
dowels, further reducing labor and material costs. The spacing
charts below are conservative and are based on spacing
recommendations in accordance with ACI 360-06.
Larger steel plates provide greater overall surface area to
reduce bearing stresses on concrete
Non-Tapered plate prole ensures consistent bearing stresses at
joint face and full depth of dowel
Engineered to provide optimal use of steel Integral, patented
sleeve insert eliminates lateral restraint between concrete
sections
A doweling method in accordance with ACI 302 Guide for Concrete
Floor and Slab Construction ACI 330 Guide for the Design &
Construction of Concrete
ACI 360 Design of Slabs-on-Ground One-Piece Design with
alignment marks and pre- installed nails makes installation quick
and easy
Ensures proper dowel alignment at a construction joint Save
labor
No form drilling required No greasing, spinning, removing or
replacing of dowels
The Choice for Flat Plate Dowel SystemsSuperior Performance,
Lower Cost
Steel plates included
Note: Values are based on a maximum joint opening of 0.20
Phone 800-325-9504 www.GREENSTREAK.com
Parking Lots
Steel plates included
```
Testing and Research Greenstreaks Technical Engineering
Department has dedicated countless laboratory hours and research
funds to investigate load transfer systems. Independent tests were
conducted to provide an unbiased evaluation of the current doweling
methods available, including round, at plate, square, and diamond
plate. The test procedure utilized a modied version of the AASHTO
T253 test for load transfer devices and was designed to determine
the following:
Total joint deection under load Bearing stresses imparted to the
concrete at the joint face Failure mode of each doweling system
Modified AASHTO T253 Test Diagram Clamping Forces
End Supp Eort nd Support
Dowel Bars
Clamping Forces
P
8 16 8
8 2 1
All dimensions are in inches.
21
6
#4 Rebar
Load Test Frame
Test Results
0.
0.
0.
0.
0.
0.
0.
000
005
010
015
020
025
0300.025 joint deflection or less is typically acceptable ACI
Seminar Minimizing Floor and Pavement Curling and Shrinkage
Problems Las Vegas, NV Jan.16, 2006
Tests of ALL DOWEL SYSTEMS resulted in a tensile pop-out failure
of the concrete. All dowel types provided deections well less than
the typically accepted value of 0.025 when loaded to 2,000 lb per
dowel (equivalent to a 10,000 lb axle load). Deections greater than
0.025 can lead to joint failure due to impacts from wheeled trac.
MINIMIZING DEFLECTIONS is key to insuring the durability of the
joint. Dowels with rectangular cross sections and larger widths are
eective in reducing bearing stresses on concrete. Adding sleeves to
dowels of all types also reduces the bearing stress on the
surrounding concrete. SPEED PLATE provides the lowest stress on the
surrounding concrete of all Greenstreak Dowel Systems. Bearing
stress alone, however, does not predict ultimate dowel loads. All
dowel systems tested failed at a wide range of bearing stress but
at similar applied loads. Flat plates or square dowels with sleeves
that allow movement in the direction of the joint, are eective in
eliminating lateral restraint between concrete sections. The SPEED
PLATE sleeve incorporates an integral, custom insert that provides
lateral movement capability between concrete sections. It is
critical to use internal vibration to consolidate the concrete
around ALL plate dowel systems.
GREENSTREAK GROUP, INC. St. Louis, MO Ontario, CA Franklin, MA
Greenville, SC
800-325-9504 or 636-225-9400 www.greenstreak.com
X 4.5 X 4.5 Diamond Plate
X 4 X 6 SPEED PLATE
Less
is
best
Deflection (inches)
@ 2,000 lb dowel load
Typical "pop-out" failure of tested dowel systems
Conclusions
01/09